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o. 749,033. PATENTED JAN. 5, 1904,

- F. G.GRBED.

TELEGRAPHIG RECEIVING APPARATUS. I

APPLICATION FILED AUG. 91 1902. K0 MODEL. 3 SHEETS-SHEET 1r PATENTED JAN. 5, 1904;. F. G. GREBD. TELEGRAPHIG RECEIVING APPARATUS APPLICATION FILED AUG. 9, 1902.

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No. 749,033. PATENTBD JAN. 5, 1904.

P. G. GREED.

TELEGRAPHIC RECEIVING APPARATUS.

APPLICATION FILED AUG. 9, 1902.

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UNITED STATES Patented January 5, 1904.

' PATENT OFFICE.

FREDERICK GEORGE OREED, OF LENZIE, SCOTLAND, ASSIGNOR TO HIMSELF, AND WILLIAM ARTHUR COULSON, OF GLASGOW, SCOTLAND.

TELEGRAPHIC RECEIVING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 749,033, dated January 5, 1904.

Application filed August 9 1902. Serial No. 119.103. (No model.)

To all whom it may concern:

Be it known that I, FREDERICK GEORGE OREED, a subject of the King of Great Britain and Ireland, residing at Lenzie, in the county 5 of Lanark, Scotland, have invented Improvements in Telegraphic Receiving Apparatus, of which the following is a specification.

This invention relates to telegraphic receiving apparatus suitable for perforating a tape I in accordance with electric impulses in the manner usual in automatic Wheatstone telegraphic apparatus, the invention having for its object to render such apparatus capable of being efficiently operated at a higher speed than it is believed has been hitherto found practicable.

In telegraphic apparatus according to this invention the line currents are caused, through the medium of a relay, to first operate an electromagnet (hereinafter called for distinction the correctingmagnet that will, if necessary, so correct the position of the receiving-tape fed through the apparatus that the holes punched therein to form a telegraphic message shall accurately correspond with those in the transmitting-tape and afterward to operate an electromagnet (hereinafter called for distinction the punching-magnet) to punch the receiving-tape in accordance with the signal received. The correcting-magnet may be in a separate circuit from and control that of the punching-magnemor the two magnets may in some cases be in the same circuit. In each case the construction and arrangement are such that the correctingmagnet will act before the punching-magnet. For punching the tape at each side thereof, as in Wheatstones system of automatic telegraphy, two sets of correcting and punching 4o magnets are used. I

The invention consists in various novel features of construction and combinations and arrangement of parts, all as hereinafter de-' scribed, and pointed out in the claims.

In the accompanying drawings, Figure 1 shows in plan and partly diagrammatically, and Fig. 2 in sectional elevation on the line A A of Fig. 1, telegraphic receiving apparatus according to this invention. Fig. 3 shows 50 in plan a modified arrangement. Fig. 4 is a detail view.

Referring to Figs. 1 and 2, a is a feedwheel for causing the receiving-tape b to pass between a pair of die-plates 0, through which a pair of punches d and e are arranged to work in the usual manner for the purpose of forming holes in the tapeat each side of the central row of feed-holes f therein to reproduce a telegraphic message. The feed-wheel is fixed upon a spindle g, that is rotated from a motor h, through a continuously-rotating driving-shaft 'i and a yielding connection, at the same speed as that of the motor of the transmitting apparatus. For this purpose the motor may conveniently be an electric one, and its speed may be controlled in the manner and by the means described in the specification of another application for Letters Patent filed by me, dated August 4, 1902, Serial No. 118,370. The yielding connection between the spindle g and continuously-rotating driving-shaft 'i may conveniently be a friction-clutch comprising, for example, a pair of spring-arms k, fixed at one end to a collar m on the shaft and provided at their other end with blocks n in frictional driving connection with a collar 0 on the spindle.

For correcting any error in the position of the feed-Wheel a, and consequently of the tape 17, before the punching thereof takes place there are fixed to the spindle 9 two correcting-wheels o and q, in proximity to which there are provided two correcting devices r and s, that are adapted to be respectively operated by the armatures t and u, of two electromagnets o and w, constituting what are herein called the p correcting magnets." Each of thesecorrecting-magnets has a winding of comparatively low resistance and a light armature, so that when its circuit is closed it will act very quickly to operate its armature.

In the example each correcting device r and s is formed by a bent, lever-arm fixed to the corresponding armature and formed with a V-shaped free end adapted when the said armature is attracted by its magnet to enter the V-shaped space between two of the teeth of the corresponding correcting-wheel p orq and, if this wheel is slightly in advance of or behind its correct position at the moment, to bring the wheel, and consequently the tape, to

the proper position previous to punching the tape.

The punches d and e are arranged to be respectively operated through links 1 and 2 from the armatures 3 and 4 of two electromagnets 5 and 6, constituting what are herein called the punching-magnets.

The correcting-magnets v and w are arranged in separate electric circuits 7 8 and 7 9, controlled by the tongue 10 of a relay 11. This relay is of the kind commonly known as a polarized neutral relay adapted to be actuated by line-currents from the transmitting-station and whose tongue 10 is normally held in the mid and inoperative position, but which will be actuated in one direction or the other by line-currents, so as to bear against one or other of two stationary adjustable contacts 12 and 13, according to the direction of the current, and momentarily close either the circuit 7 8 of the magneto or the circuit 7 9 of the magnet 10. In this arrangement the linecurrents in both directions are preferably of equal unit duration.

The punching-magnets 5 and 6 are respectively in electric circuits 14 and 15, that are separate from the circuits of the correctingmagnets 12 and w and are normally open, but are adapted to be respectively closed by circuit-closers controlled by the said magnets 12 and to. In the example the circuit-closer for the circuit 14 comprises a spring-contact 16, carried by the armature t and adapted when attracted by magnet 41 to bear against an adjustable fixed contact 17 and close the said circuit. Similarly, the circuit-closer for circuit 15 comprises a spring-contact 18, carried by the armature u, and an adjustable fixed contact 19.

Each of the armaturest and u is connected to an adjustable spring 20, that normally holds it and the correcting device 1" or s in the inoperative position. Similarly, each of the armatures 3 and 4 is connected to an adjustable spring 21, that normally holds it and the corresponding punch in the inoperative position, which can be adjusted by a screw 22.

The operation of the apparatus is as follows: Assuming the feed-wheel a to be running and moving the tape 1) through the apparatus, then upon a line-current being received by the relay 11 in a direction to cause the tongue 10 to close the circuit 7 8 the correcting-magnet '0 will be instantly energized and its armaturet actuated, so as to cause the correcting device 0" to engage the correcting-wheel e, and, if necessary, thereby correct the position of the tape relatively to the corresponding punch 01 and then hold the feed-wheel and tape stationary against the action of the friction-clutch. During this action the spring-contact 16 is brought against the contact 17, so as to close the circuit 14 of the punching-magnet 5 and cause its armature 3 to force the punch d forward and perforate the tape. Upon the tongue 10 returning to its central position the circuit of magnet will be broken and the armature I. returned by its spring 20, as to withdraw the correcting device 1' from the correctingwheel 19 and break the circuit of magnet 5, the armature 3 of which will then be returned to its normal position by its spring 21 and move back the punch d, whereupon the feedwheel a and tape b, being new free, will again move forward as before. When the tongue 10 is moved by a line-current in the reverse direction to close the circuit 7 9, the correcting-magnet to will be similarly energized in a rapid manner to operate the correcting de- Vice 5 and wheel q and to close the circuit of the punching-magnet 6 and cause the punch e to perforate the tape on the other side'of the center thereof.

By varying the strength of the spring-contacts 16 and 18 and the normal distance therefrom of the fixed contacts 17 and 19, as well as the pull of the springs 20 and 21 and the strength of the batteries in the several circuits, any desired time relation between the correcting and punching operations of the respective sets of magnets can be secured and maintained.

As will be obvious, the invention can be carried out in various forms. Itherefore do not limit myself to the exact construction of the preferred arrangement shown and described, as my invention is capable of considerable variation without departing from its essential features. For example, Fig. 3 shows a modified arrangement wherein the correcting and punching magnets '21 and 5, respectively, are in the same circuit 7 8*, and the correcting and punching magnets w and 6 being likewise in the same circuitviz., 7 9 In this case each correcting-mag net '0 w and its armature t or u are made lighter than the corresponding punchingmagnet 5 6 and its armature 3 4, so that each correcting action will take place before the punching action, by reason of the smaller magnetic and mechanical inertia of the correcting magnets and armatures. The operation of this modified arrangement is similar to that of the apparatus shown in Figs. 1 and 2, except that the circuits of both magnets o 5 or w 6 will be closed and opened simultaneously; but the correcting-magnets 12' and to will in each case act in advance of the punching-magnets 5 and 6.

What I claim is- 1. Telegraphic receiving apparatus comprising a tape-feeding wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motor whereby said feed-wheel and tape can remain stationary while said motor rotates, a punch for perforating said tape, means for correcting the position of said tape before being punched, electromagnetic means adapted, under the action of line-currents, to operate said correcting means, and electromagnetic means adapted to operate said punch to perforate said tape after said correcting means have acted.

2. Telegraphic receiving apparatus comprising a tape-feeding wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motorwhereby said feed-wheel and tape can remain at rest during each punching operation and afterward be rotated by said motor, a punch for perforating said tape, means for correcting the position of said tape before being punched, electromagnetic means adapted, under'the action of line-currents, to operate said correcting means, and electromagnetic means adapted to operate said punch to perforate said tape after said correcting means have acted.

3. Telegraphic receiving apparatus comprising a tape-feeding wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motor whereby said feed-wheel and tape can remain at rest during each punching operation and afterward be rotated by said motor, electromagnetically-operated meansfor punching said tape, electromagnetically-operated means for correcting the position of said feed-wheel and tape before the punching operation, and a relay adapted to receive line-currents and control the action of said electromagnetic means.

4:. Telegraphic receiving apparatus comprising a tape-feeding wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motor whereby said feed-wheel and tape can remain at rest during each punching operation and afterward berotated by said motor, a punch for perforating said tape, an electromagnet for operating said punch, means for correcting the position of said feed-wheel and tape, an electromagnet adapted to operate said correcting means before said punch is operated, and means adapted to be operated by line-cur rents and to control the action of said magnets.

5. Telegraphic receiving apparatus comprising a tape-feeding wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motor whereby said feed-wheel and tape can remain at rest during each punching operation and afterward be rotated by said motor, a punch for perforating said tape, a punching-magnet, means for correcting the position of said feed-wheel and tape before each punching operation,and a correcting-magnet subject to the control of line-currents and adapted to control the action of said correcting means and also that of said punching-magnet.

6. Telegraphic receiving apparatus comprising a tape-feeding wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motor, a punching-magnet, a correcting-wheel fixed to said feed-wheel, a correcting device adapted,when

operated, in'on'e direction, to engage and, if necessary, correct the position of said correcting-wheel, a correcting-magnet for operating said correcting device, and means adapted, under the action of line-currents, to cause said correcting and punching magnets to operate one after the other.

- 7. Telegraphic receiving apparatus comprising a tape-feeding wheel, a motor for rotating said feed-wheel, ayielding connection between said feed-wheel and motor, a punching-magnet, a correcting-wheel fixed to said feed-wheel, a correcting device adapted,when

operated in one direction, to engage and, if necessary, correctthe position of said correcting-wheel, a correcting-magnet adapted to operate said correcting device and to close the circuit of said punching-magnet, and means adapted under the action of line-currents, to close the circuit of-said correcting-magnet.

8. Telegraphic receiving apparatus comprising a tape-feed wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motor, two punches for perforating said tape at opposite sides of the center thereof, electromagnetic means adapted to operate said punches, means for correcting the position of said feed-wheel and tape at each operation of the apparatus, and

before each punching operation, electromagnetic means for operating said correcting means, and means operated by line-currents for bringing said electromagnetic means into operation.

9. Telegraphic receiving apparatus comprising a tape-feed wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motor, two punches for perforating said tape at opposite sides of the center thereof, two separate electromagnetic devices for operating said punches, means for correcting the position of said feedwheel andtape before each punching operation, two electromagnetic devices each adapted when energized to operate said correcting means, and a means adapted by a line-current in one or other direction to bring one or other of the electromagnetic devices for operating said correcting means, and one or other of the electromagnetic devices for subsequently operating one of said punches into operation.

10. Telegraphic receiving apparatus comprising a tape-feed wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motor, two punches for perforating said tape at opposite sides of the center thereof, two separate punch-operating magnets, two separate sets of correcting means each adapted to correct any error in the position of said feed-wheel and tape previous to a punching operation, two separate correcting-magnets each adapted to operate one of said sets of correcting means, and a relay adapted to be operated by a linecurrent in either direction and to cause one or other of said correcting-magnets and subsequently the corresponding punching-magnet to be operated.

11. Telegraphic receiving apparatus comprising a tape-feed wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motor, two punches for perforating said tape at opposite sides of the center thereof, two separate punch-operating magnets, two separate sets of correcting means eachadapted to correct any error in the position of said feed-wheel and tape previous to a punching operation, two separate correcting-magnets each adapted to operate one of said sets of correcting means and to close the circuit of one of said punchingmagnets, and a relay adapted to be operated by a line-current in either direction and to close the circuit of one or other of said correcting-magnets.

12. Telegraphic receiving apparatus comprising a tape-feed wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motor, two punches for perforating said tape at opposite sides of the center thereof, two separate punch-operating magnets, two separate sets of correcting means each adapted to correct any error in the position of said feed-wheel and tape previous to a punching operation and comprising a toothed wheel connected to said feed-wheel and a tooth or projection adapted to enter the space between two teeth of the said correcting-wheel, two separate correctingmagnets each adapted to operate one of said correcting devices, and a relay adapted to be operated by a line-current in either direction and to cause one or other of said corto one of said punches, a circuit-closer for each of said electric circuits, means for correcting the position of said feed-wheel and tape previous to each punching operation, two separate correcting-magnets arranged in separate electric circuits and each having its armature arranged to operate the correcting means and subsequently to close the circuit of the corresponding punching-magnet, a retractile spring connected to each of said armatures, and a relay adapted by alternating line-currents to alternately close the circuits of said correcting-magnets.

14:. Telegraphic receiving apparatus comprising a tape-feed wheel, a motor for rotating said feed-wheel, a yielding connection between said feed-wheel and motor, two pouches for perforating said tape at opposite sides of the center thereof, two separate punchingmagnets arranged in separate electric circuits and having their armatures each connected to one of said punches, a circuit-closer for each of said electric circuits, two toothed correcting-wheels connected to said feed-wheel, two correcting-bars each having a pointed end adapted to enter the space between two teeth on the corresponding correcting-wheel and partly turn the same if it be not in correct position, two separate correcting-magnets arranged in separate electic circuits and each having its armature connected to the movable part of the circuit-closer of the corresponding punching-magnet and to the corresponding corrrecting-bar, each of said correcting-magnets with armature having small magnetic and mechanical inertia for the purpose set forth, a retractile spring connected to each of said armatures, and a relay adapted to be operated by line-currents in opposite directions and to close the circuits of said correcting-magnets alternately, substantially as described.

, Signed at Anstruther, Scotland, this 5th day of July, 1902.

FREDERICK GEORGE CREED.

Witnesses:

JAMES BROWN, DAVID OGILVIE. 

